It's no secret that virtualization services are proliferating in the data center. Server virtualization has become one of the most significant agents of change in today's IT shop. In addition to enabling far greater server utilization rates, this technology offers corresponding power and cooling benefits that many IT organizations find attractive. In response to successful server virtualization efforts, many companies are now developing storage virtualization products that offer single pools of storage, thin provisioning and snapshot to create similar efficiencies.